Valve.



T. F. PAYNE.

vALvn.

APPLIOATIOI FILED 00T. 3, 1907.

Patented' Nov. 29, 1910.

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T0 it concern:

UNITED 'STATES 'PATENT OFFICE.

THOMS F.,PAYNE, PITTSBUBG, PENSYLVANIA.

vBe it known that A1, .THOMAS F. PAYNE, of Pittsburg, inv the county ofAllegheny and State ofPennsylvania, have invented a certain'ne'w anduseful Improvement in Valves, of which the following is a full, clear,and 4exact description, reference being had to the accompanying drawing,forming part of this speeication, in which- Figure 1 is a verticalsectional view illustrating Iny invention and showing the valve in itsclosed position; Fig. 2 is a horizontal sectional view on the'line 2--2yof Fi 1; and Fig. 3v is a vertical sectional View s `owing the valve inits open position.

Like symbols of reference indicate like parts wherever they occur.

Heretofore in most self-closin valves for water-mains, washstands, &c.,t e pressure of the Water in closing the valve has acted so rapidly asto cause an unpleasant and injurious jar and thumping when the valvestrikes its seat.

The object of my invention is to provide a cushion which shall serve todeaden the force of the return ofthe valveat the end of its stroke andalsoto provide a self-closing valve of simpler and more durableconstruction than has heretofore been in use and which can be easilytaken apart for repairing and cleaning.

1n the drawing 2\represents the hollow casing having a spout 3, a flangeseat 41,

adapted to rest against the wall or shelfl of thestand, and a threadedcoupling extension 5, all of which parts may be formed in one piece.Inside of the casing 2 is the annular shoulder 6 which serves as asupport for the valve seat and barrel. This valve seat and barrel arecomposed of a casting 7 which is adapted to be dropped into the interiorof the casing 2, to rest on the shoulder 6, and to be held firmly inposition by the screw cap 8 of the casing 2. At the lower enl of thebarrel 7 is the valve-seat 9 having a `ace against which the valve 10 isadapted to seat. In the barrel 7 above the valve-seat 9 is a doublecylindrical chamber, the lower portion 11 of which has a greaterdiameter than the upper portion 11B. The valve 10 ma be formed ofrubberlor other like materlal adapted to seat itself against thevalve-seat 9. On the valvelstem 13, above the valve 10, is a doublecylindrical plug having its lower portion 12 of such diameter as to fitwithin 'the cylindrical cavity 11, and

VALVE.

Specification of Letters Patent. Patented 29, 19,10. ,l Applicationledoctober 3, 1907. Serial No. 395,676.

the upperportion 12a of such diameter as to it in the cylindrical cavity11a. Above the cavity 11a is a partition 14 having a central opening forthe passage 0f the valve stem 13. Secured tothe upper portion of thevalve-stem-13 is a nut 15, and between this nut and the partition 14 isthe rcoiled sprin 16, `the force of which is exerted up- Ward y. Openingfrom the cavity 11a, opposite the spout 3, is a passage 17 to permit ofthe free flow of Water from ,the cavity. Bearing on the top of thevalve-stem 13 is a V-shaped depressin cam 18 of the ordinaryconstruction an having a handle 20. The barrel 7 is prevented fromrotating in the casing 2 by the feather and spline 19. Opening from theupper or outer cavity 21v in whic the spring 16 is located, is a smallwaste passage 22 WhicheXtends to a point 'opposite the upper portion ofthe'mouth of t The operation is as follows: When it is desired to openthe valve to permit of the iiow of Water therethrough, the handle 2O isgiven a half turn which depresses the valvestem 13, the valve 10 and theplugs 12 and 12IL to the position-shown in Fig. 3, the valvev 10 beingremoved from its valve-seat and the plugs I12 and 12 being lowered belowthe 111g a free channel for the How of water from the water-pipe 5 tothe spout 3. When the handle is released, the hydraulic force of thewater unseats the depressing cam 18 and carries the valve stem 13upwardly. lefore,-however, the valve 10 can strike againstthc valve-seat9, the plugs 12 and 12 enter the cavities 11 and 11, thus imprisoni'ngwater in the cavity 11 which serves as a cushion and pre-vents the valvefrom striking violently under the pressure of water againstthevalve-scat. The water thus im'- prisoned gradually leaks past the plug12% and permits the valve 10 to seat itself against the valve-scat 9.The purpose of the waste passage 22 is to permit the flow of waterthrough the spout 3 to draw any wat-er out of the cavity 21 that mayhave leaked therein by suction. As the upper portion of the barrel' 7fits tightly against the sleeve of the cap S, no packing is necessarybetwecnthe cap and the casing 2. As the valve-seat 9 is formed in thebarrel 7, instead of in the casing 2, the valve may belifted out of thecasing with thebarrel 7 when the cap 8 has been unscrewed from thecasing.I

cavities 11 and 11u respectively, thus forni The advantages of myinvention which result from the devices Which imprison the AWater andform a cushion, from the coninteriorannular flange, a removable barrelsupported upon said flange and having a lower chamber constituting afluid channel having passages ofdiferent dlanieters and beappreciprovided at its lower end with a valve-seat, and an upper chamberconstituting a housing for a valve spring, a valve and double plugarranged to enter said passages and form an intermediate closed annularpocket when the valve approaches the valve-seat, an intermediate wallseparating said chambers and forming a seat 25 for sald valve sprlng,and a port conuectlng said upper chamber with the valve outlet.

In testimony whereof, I have hereunto set my hand.

y THOMAS F. PAYNE.

Witnesses JAMES K. BAKEWELL. C. E. EGGERS.

a valve stem having 2o

